internationally, and his legacy is primarily ,econciliation, redress constitutionalism, and the rule of law, open market economies, diversity, and non-racialism. >> i am extremely sad. it is tragic news. just remind it what an extraordinary and inspiring man nelson mandela was. my thoughts are with him and his family. >> i want to introduce you now to an ambassador who has dealt with nelson mandela in the past, the first woman u.s. ambassador to south africa, and the senior director for african affairs at the national security council, currently a distinct professor at carnegie mellon university and also the director of the carnegie center for international policy and innovation. ambassador, thank you so much for joining us. tell us about meeting nelson mandela in person and what it was like. >> i first met nelson mandela in 2001 at the white house in the oval office when he came to meet with president george walker bush. i was, of course, like everybody else in the white house, all inspired.-- awe- he was frail at the time, but he was a very straight up guy, very tall, a magnificent presen